Tall 和 high 這兩個形容詞都意為「高的」，但 tall 是用來指人、建築物以及會長高的東西，而 high 則用來指高山以及離地面有一段頗長距離的東西。例如：
- James is thin and tall. (詹姆斯又瘦又高) (正)
James is thin and high. (誤) - It’s the world’s tallest tower. (那是世界最高的大樓)
- It’s the highest mountain in the world. (那是世界最高的山)
- The plants were two meters tall. (這些植物有 2 公尺高)
- There are many tall trees in our school. (我們學校有許多高樹)
- The light switch is too high for a child to use. (電燈開關對小孩來說太高了，碰觸不到)
- There is a high ceiling in my office. (我辦公室的天花板很高)
- John built a 3-meter-high wall around his house. (約翰在他房子的四周築起了 3 公尺高的圍牆)
- How tall are they? (他們身高有多高？)
- How high are they? (他們距地面有多高？)